# 🇬🇧 RuuviTag & RuuviTag Pro sensors **URL:** https://f.ruuvi.com/c/products/tag/22.md [Latest](https://f.ruuvi.com/latest.md) · [Categories](https://f.ruuvi.com/categories.md) --- ## [About the 🇬🇧 RuuviTag & RuuviTag Pro sensors category](https://f.ruuvi.com/t/about-the-ruuvitag-ruuvitag-pro-sensors-category/1280)
**Author:** [@lauri](https://f.ruuvi.com/u/lauri)\ **Replies:** 0\ **Last updated:** [25 October 2018 15:09 UTC](https://f.ruuvi.com/t/about-the-ruuvitag-ruuvitag-pro-sensors-category/1280 "2018-10-25T15:09:55Z")
Any topic or question related to the RuuviTag and RuuviTag Pro sensors. --- ## [Idea for a Compact Outdoor Bluetooth Sensor](https://f.ruuvi.com/t/idea-for-a-compact-outdoor-bluetooth-sensor/6749)
**Author:** [@tobiasgue](https://f.ruuvi.com/u/tobiasgue)\ **Replies:** 3\ **Last updated:** [2 November 2026 07:39 UTC](https://f.ruuvi.com/t/idea-for-a-compact-outdoor-bluetooth-sensor/6749 "2026-11-02T07:39:14Z")
Hey everyone, I recently came across the Ruuvi Tag and Ruuvi Tag Pro, which are great products for stationary use. However, I think there’s an opportunity to create something even more portable for outdoor activities li… --- ## [Wall u-value measurement](https://f.ruuvi.com/t/wall-u-value-measurement/7958)
**Author:** [@GeorgiosT](https://f.ruuvi.com/u/GeorgiosT)\ **Replies:** 1\ **Last updated:** [2 September 2026 01:30 UTC](https://f.ruuvi.com/t/wall-u-value-measurement/7958 "2026-09-02T01:30:30Z")
Hello everyone, I want to measure the heat capacity “U” (thermal performance) of a wall in order to perform a heat loss calculation. My plan is to place three RuuviTag Pro sensors as follows: One mounted on the inter… --- ## [Ruuvi tag cannot be found on bluetooth](https://f.ruuvi.com/t/ruuvi-tag-cannot-be-found-on-bluetooth/7954)
**Author:** [@mitiih](https://f.ruuvi.com/u/mitiih)\ **Replies:** 1\ **Last updated:** [18 August 2026 02:04 UTC](https://f.ruuvi.com/t/ruuvi-tag-cannot-be-found-on-bluetooth/7954 "2026-08-18T02:04:42Z")
Hi, I have quite old ruuvi tag. It has the B and R buttons. Recently I had it outside and its battery ran out and it was offline few weeks. Now when I changed its battery, it cannot be found on bluetooth. I have tried… --- ## [Using standard RuuviTag inside a FRIO cooling case for EpiPens (100% humidity)](https://f.ruuvi.com/t/using-standard-ruuvitag-inside-a-frio-cooling-case-for-epipens-100-humidity/7951)
**Author:** [@Haig\_Zsolt](https://f.ruuvi.com/u/Haig_Zsolt)\ **Replies:** 2\ **Last updated:** [10 August 2026 06:10 UTC](https://f.ruuvi.com/t/using-standard-ruuvitag-inside-a-frio-cooling-case-for-epipens-100-humidity/7951 "2026-08-10T06:10:00Z")
Hi everyone, I am planning to use a standard RuuviTag to monitor the temperature of my 2 EpiPens. The pens must strictly be kept between 15°C and 25°C. Currently, we are experiencing heatwaves around 40°C where I live. … --- ## [Change battery in ruuviPro](https://f.ruuvi.com/t/change-battery-in-ruuvipro/7933)
**Author:** [@dgerman](https://f.ruuvi.com/u/dgerman)\ **Replies:** 1\ **Last updated:** [23 July 2026 00:42 UTC](https://f.ruuvi.com/t/change-battery-in-ruuvipro/7933 "2026-07-23T00:42:48Z")
So the battery is finally running out in your ruuviPro. Getting the case open can be a real pail. Ruuvi Rench to the rescue --- ## [Latest measurement not updated everywhere](https://f.ruuvi.com/t/latest-measurement-not-updated-everywhere/7931)
**Author:** [@Mikko](https://f.ruuvi.com/u/Mikko)\ **Replies:** 1\ **Last updated:** [22 July 2026 01:55 UTC](https://f.ruuvi.com/t/latest-measurement-not-updated-everywhere/7931 "2026-07-22T01:55:48Z")
I noticed on July 6 that the latest measurement shown in a pane (2,97 V), did not match the latest measurement shown in the graph (3,087 V). The reason for the battery voltage to rise was because I changed to a fresh ba… --- ## [Two sensors](https://f.ruuvi.com/t/two-sensors/7925)
**Author:** [@rbouwman](https://f.ruuvi.com/u/rbouwman)\ **Replies:** 1\ **Last updated:** [3 July 2026 02:41 UTC](https://f.ruuvi.com/t/two-sensors/7925 "2026-07-03T02:41:07Z")
I have two tags. I have them placed next to each other and notice a significant difference in temperature. Does anyone know why that is? See the attached photos. --- ## [Another humidity damaged tag. Board water proof coating?See a view of the board](https://f.ruuvi.com/t/another-humidity-damaged-tag-board-water-proof-coating-see-a-view-of-the-board/7918)
**Author:** [@dgerman](https://f.ruuvi.com/u/dgerman)\ **Replies:** 2\ **Last updated:** [23 June 2026 22:17 UTC](https://f.ruuvi.com/t/another-humidity-damaged-tag-board-water-proof-coating-see-a-view-of-the-board/7918 "2026-06-23T22:17:28Z")
I put a ruuvi in the sand in the swamp to measure the sand temperature related to turtle egg research. I got back 3 weeks later to find that the ruuvi had halted. It appears that an animal had bitten a tiny hole in the g… --- ## [Add new sensor](https://f.ruuvi.com/t/add-new-sensor/7920)
**Author:** [@rbouwman](https://f.ruuvi.com/u/rbouwman)\ **Replies:** 1\ **Last updated:** [18 June 2026 00:43 UTC](https://f.ruuvi.com/t/add-new-sensor/7920 "2026-06-18T00:43:16Z")
After a heavy rain shower, my Ruuvi sensor stopped working. Now, when I look at the sensor, it functions. When I start it, I see a red light, and after a while, that turns green. I also see a green LED every few secon… --- ## [Ruuvi sensors-Setup for Beehive Monitoring](https://f.ruuvi.com/t/ruuvi-sensors-setup-for-beehive-monitoring/7917)
**Author:** [@Saba](https://f.ruuvi.com/u/Saba)\ **Replies:** 2\ **Last updated:** [17 June 2026 04:36 UTC](https://f.ruuvi.com/t/ruuvi-sensors-setup-for-beehive-monitoring/7917 "2026-06-17T04:36:08Z")
Hi Everyone, I an a PhD Student working on beehive-based research data collection, and I am currently exploring practical sensor options for monitoring hive conditions. I recently came across Ruuvi sensors and noticed … --- ## [How should the cover be placed?](https://f.ruuvi.com/t/how-should-the-cover-be-placed/7919)
**Author:** [@jan99](https://f.ruuvi.com/u/jan99)\ **Replies:** 1\ **Last updated:** [15 June 2026 01:21 UTC](https://f.ruuvi.com/t/how-should-the-cover-be-placed/7919 "2026-06-15T01:21:12Z")
I opened my Ruuvi today and then tried to put the lid back on. A German-language YouTube video explained how the opening in the lid needs to be positioned over the circuit board so that the sensors are exposed. But for… --- ## [Sound if temperatur alarm](https://f.ruuvi.com/t/sound-if-temperatur-alarm/7872)
**Author:** [@jan99](https://f.ruuvi.com/u/jan99)\ **Replies:** 3\ **Last updated:** [15 June 2026 01:13 UTC](https://f.ruuvi.com/t/sound-if-temperatur-alarm/7872 "2026-06-15T01:13:39Z")
Hi! I’m thinking about buying a Ruuvi sensor for temperature monitoring. If the threshold is exceeded, does it emit an audible alert? That would be important to me. Best regards, Jan --- ## [Losing signal](https://f.ruuvi.com/t/losing-signal/7885)
**Author:** [@panthe7](https://f.ruuvi.com/u/panthe7)\ **Replies:** 11\ **Last updated:** [25 May 2026 18:16 UTC](https://f.ruuvi.com/t/losing-signal/7885 "2026-05-25T18:16:06Z")
Hi, where is problem and why RuuviTag losing signal? Firmware: 3.34.1+extralife ( Extend the battery life - #7 by otso ) HW: Raspberry Pi 5 (4GB) OS: Home Assistant OS 17.2 (2026.4.2) Connection: BT LE --- ## [New RuuviTag 37F low](https://f.ruuvi.com/t/new-ruuvitag-37f-low/7900)
**Author:** [@AndyRonLI](https://f.ruuvi.com/u/AndyRonLI)\ **Replies:** 6\ **Last updated:** [15 May 2026 00:32 UTC](https://f.ruuvi.com/t/new-ruuvitag-37f-low/7900 "2026-05-15T00:32:18Z")
Folks, Brand new RuuviTag. Placed in freezer and reads -42, freezer itself says it is at -4. Took it out of freezer and it reads 31F, thermostat says 67F. It is reading a massive 36 to 38 degrees low! Any thoughts? Usi… --- ## [Can’t connect after battery change](https://f.ruuvi.com/t/can-t-connect-after-battery-change/7889)
**Author:** [@robbjd](https://f.ruuvi.com/u/robbjd)\ **Replies:** 3\ **Last updated:** [13 May 2026 23:53 UTC](https://f.ruuvi.com/t/can-t-connect-after-battery-change/7889 "2026-05-13T23:53:34Z")
I changed the battery on a pro and can’t connect to blue tooth now. --- ## [How do I use encryption with Ruuvi Station Android app](https://f.ruuvi.com/t/how-do-i-use-encryption-with-ruuvi-station-android-app/7888)
**Author:** [@TurpeaTurnipsi](https://f.ruuvi.com/u/TurpeaTurnipsi)\ **Replies:** 2\ **Last updated:** [28 April 2026 11:08 UTC](https://f.ruuvi.com/t/how-do-i-use-encryption-with-ruuvi-station-android-app/7888 "2026-04-28T11:08:11Z")
I just learned that Ruuvitags can encrypt their transmitted data. There’s no such option in Ruuvi Station Android app. How can I use this feature as an end user? I live in a high rise and I don’t want my neighbors to rea… --- ## [Ruuvi tag external temperature](https://f.ruuvi.com/t/ruuvi-tag-external-temperature/7886)
**Author:** [@gouwzee](https://f.ruuvi.com/u/gouwzee)\ **Replies:** 1\ **Last updated:** [23 April 2026 13:35 UTC](https://f.ruuvi.com/t/ruuvi-tag-external-temperature/7886 "2026-04-23T13:35:16Z")
great to see that we finally have a Ruuvi tag with an external sensor. However, as of this point, I miss a lot of information. Some examples: will it show up in station as a regular 2in1, with the temperature originati… --- ## [Anyone in DE want 3 new, unopened silicon cases for RuuviTag?](https://f.ruuvi.com/t/anyone-in-de-want-3-new-unopened-silicon-cases-for-ruuvitag/7883)
**Author:** [@juskalalie](https://f.ruuvi.com/u/juskalalie)\ **Replies:** 0\ **Last updated:** [13 April 2026 18:02 UTC](https://f.ruuvi.com/t/anyone-in-de-want-3-new-unopened-silicon-cases-for-ruuvitag/7883 "2026-04-13T18:02:49Z")
I have 3 new and unopened silicon cases for RuuviTag, I will ship them to anyone in Germany if you just pay for shipping. Let me know if anyone is interested! Cheers Greg --- ## [RuuviTag Pro Erratic External TMP117 Sensor Readings](https://f.ruuvi.com/t/ruuvitag-pro-erratic-external-tmp117-sensor-readings/7864)
**Author:** [@Logonwheeler](https://f.ruuvi.com/u/Logonwheeler)\ **Replies:** 1\ **Last updated:** [3 March 2026 07:15 UTC](https://f.ruuvi.com/t/ruuvitag-pro-erratic-external-tmp117-sensor-readings/7864 "2026-03-03T07:15:08Z")
I have both the RuuviTag Pro w/ External Sensor from the Ruuvi store and my own DIY version in which I soldered my own TMP117 external sensor from Focusens to the board per this topic: The RuuviTag Pro w/ External Sen… --- ## [History download: Characteristic updates too fast for host](https://f.ruuvi.com/t/history-download-characteristic-updates-too-fast-for-host/7822)
**Author:** [@zmullett](https://f.ruuvi.com/u/zmullett)\ **Replies:** 4\ **Last updated:** [5 January 2026 13:41 UTC](https://f.ruuvi.com/t/history-download-characteristic-updates-too-fast-for-host/7822 "2026-01-05T13:41:05Z")
Is there any way of downloading history that doesn’t require interpreting a rapid blast of BLE characteristic updates? It seems like the BLE host devices I’m targeting can’t handle the rate of the dump. --- ## [When does a tag clear its internal measurement history?](https://f.ruuvi.com/t/when-does-a-tag-clear-its-internal-measurement-history/7824)
**Author:** [@zmullett](https://f.ruuvi.com/u/zmullett)\ **Replies:** 1\ **Last updated:** [2 January 2026 20:15 UTC](https://f.ruuvi.com/t/when-does-a-tag-clear-its-internal-measurement-history/7824 "2026-01-02T20:15:53Z")
I’m trying to download historical measurements from a tag using the GATT functionality. I was able to pull ~200 events in one attempt, but then subsequent attempts pull 3… or then 6 if I wait a while. What’s causing the … --- ## [Low battery warning on Cerbo GX at 2.95v](https://f.ruuvi.com/t/low-battery-warning-on-cerbo-gx-at-2-95v/7819)
**Author:** [@Frank](https://f.ruuvi.com/u/Frank)\ **Replies:** 6\ **Last updated:** [28 December 2025 16:51 UTC](https://f.ruuvi.com/t/low-battery-warning-on-cerbo-gx-at-2-95v/7819 "2025-12-28T16:51:49Z")
Hello, I get very annoying low battery warnings on my Cerbo GX, showing the battery still has 2.95V. How can I correct this? Best, Frank --- ## [Ruuvitag Pro acceleration axes alignment](https://f.ruuvi.com/t/ruuvitag-pro-acceleration-axes-alignment/7817)
**Author:** [@sinipelto](https://f.ruuvi.com/u/sinipelto)\ **Replies:** 1\ **Last updated:** [22 December 2025 03:48 UTC](https://f.ruuvi.com/t/ruuvitag-pro-acceleration-axes-alignment/7817 "2025-12-22T03:48:11Z")
Hi! Im currently using the RuuviTag Pro to monitor vibrations of a stationary object attached using magnets on the screwholes. The Z axis is clear it detects the gravity in relation to ground when the top of the enclosu… --- ## [Ruuvi in car use](https://f.ruuvi.com/t/ruuvi-in-car-use/7796)
**Author:** [@KeithS](https://f.ruuvi.com/u/KeithS)\ **Replies:** 1\ **Last updated:** [24 November 2025 03:59 UTC](https://f.ruuvi.com/t/ruuvi-in-car-use/7796 "2025-11-24T03:59:13Z")
Ive just purchased a Ruuvi tag to measure external temperature when in car. I’ve of course downloaded the app and the device is working. However to make it simpler to display, I understand you can display a widget on y… --- ## [Ruuvi Tag ja kosteuspitoisuus](https://f.ruuvi.com/t/ruuvi-tag-ja-kosteuspitoisuus/7794)
**Author:** [@jmkorpi57](https://f.ruuvi.com/u/jmkorpi57)\ **Replies:** 3\ **Last updated:** [23 November 2025 07:25 UTC](https://f.ruuvi.com/t/ruuvi-tag-ja-kosteuspitoisuus/7794 "2025-11-23T07:25:05Z")
Hei, Minulla on ollut Ruuvi TAG käytössä sekä kotona että mökillä. Kotona asuntomme kosteuspitoisuus on todella alhainen, joten hankimme äsken ilmankostuttimen. Ruuvi näyttää huoneen kosteudeksi noi 26%, mutta ostetun la… --- ## [Extend the battery life](https://f.ruuvi.com/t/extend-the-battery-life/6864)
**Author:** [@Nora](https://f.ruuvi.com/u/Nora)\ **Replies:** 7\ **Last updated:** [19 November 2025 18:13 UTC](https://f.ruuvi.com/t/extend-the-battery-life/6864 "2025-11-19T18:13:54Z")
Hii Can anyone suggest the what is the best way to extend the battery life of my ruuvi tag when using it for outdoor monitoring? thanks :blush: --- ## [RuuviTag Pro as a Flooding Sensor for boats](https://f.ruuvi.com/t/ruuvitag-pro-as-a-flooding-sensor-for-boats/6823)
**Author:** [@Tom](https://f.ruuvi.com/u/Tom)\ **Replies:** 5\ **Last updated:** [15 November 2025 14:30 UTC](https://f.ruuvi.com/t/ruuvitag-pro-as-a-flooding-sensor-for-boats/6823 "2025-11-15T14:30:37Z")
Hi, kann i use a RuuviTag pro as a Flood warning sensor on my boat? Idea: Boat dry = normal humidity, boat sinking = 100% humidity? --- ## [Connection to Victron and Homeassistant at the same time](https://f.ruuvi.com/t/connection-to-victron-and-homeassistant-at-the-same-time/7735)
**Author:** [@jaja](https://f.ruuvi.com/u/jaja)\ **Replies:** 1\ **Last updated:** [6 October 2025 01:01 UTC](https://f.ruuvi.com/t/connection-to-victron-and-homeassistant-at-the-same-time/7735 "2025-10-06T01:01:05Z")
Hi, is it possible to connect the sensors to victron cebro and Home assistant at the same time, or can I share the data recieved from Victron and send them to homeassisant ? I need temperatures in both systems. Thanks --- ## [Temperature accuracy](https://f.ruuvi.com/t/temperature-accuracy/4795)
**Author:** [@Mikko](https://f.ruuvi.com/u/Mikko)\ **Replies:** 3\ **Last updated:** [18 August 2025 09:54 UTC](https://f.ruuvi.com/t/temperature-accuracy/4795 "2025-08-18T09:54:11Z")
I am wondering about the temperature accuracy. On ruuvi.com I found the following Temperature sensor accuracy Typical absolute accuracy ±0,5 °C @ 25 °C ±1 °C @ 0-25 °C output resolution 0,01 °C On bonsch-sensortech.co… [Next page](https://f.ruuvi.com/c/products/tag/22.md?page=1)